If 20 is added to a certain number , the result is 80 . Find the number of it .
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Answer:
Correct option is 7
Step-by-step explanation:
Let the number be x.
As per question, we have
3x−5=16
⇒3x=16+5
⇒3x=21
⇒x=7
Therefore, the number is 7.
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